The back of the neck includes the cervical spine and the muscles and ligaments that surround and support it. The cervical spine is made up of seven bones called vertebrae. The first two are slightly different to the rest, as they attach the spine to the skull and allow the head to turn from side to side. The lower five cervical vertebrae are roughly cylindrical in shape - a bit like small tin cans - with bony projections.
This is a companion discussion topic for the original article at https://patient.info/bones-joints-muscles/neck-pain/cervical-spondylosis